Culms 22–35 cm. Leaf blades involute, bristlelike, to 17 cm × 0.5–1 mm. Inflorescences: proximal bract sheaths 4–10 mm; pistillate spikes 6–7 × 1.5–2.3 mm; staminate spikes 4.5–7 × 0.7–0.9 mm. Scales: pistillate scales white-hyaline or pale brown with hyaline margins and green or brown midvein, oblong-ovate to broadly ovate, 2.1–3.5 × 0.9–1.4 mm, apex acute to subobtuse, slightly shorter than to about equaling perigynia; staminate scales white-hyaline, oblong-ovate, 3.5–6.5 × 0.8–1.8 mm, apex acute to subobtuse. Anthers 2–2.2 mm. Perigynia brown to black when fully mature, 2.2–2.9 × 0.9–1.1(–1.2) mm; beak 0.5–0.7 mm. Achenes broadly ellipsoid-obovoid, 1.6–1.9 × 0.8–1.1 mm.
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